The share must be effortless and the artifact must be worth sharing. One click from the completion email to LinkedIn, prefilled with the credential name, issuer, dates, serial, and a verification link. Open, machine-verifiable badge standards so the credential works in other systems. A verification page so anyone can confirm it.
Then measure the share rate and treat it as a product metric: every share is distribution with a name on it, and a low share rate means the credential is not yet worth carrying — return to Stage 02, Play 1.
HubSpot's precision
The share was prefilled, the company page auto-followed, and the completion announcement flowed into the feeds of exactly the professional network most likely to contain the next learner.